Conteúdo estomacal da traíra hoplias malabaricus (BLOCH, 1794) e composição íctica do Açude Boqueirão do Cais, Cuité - PB.

Abstract

Brazil is home to about 43% of the freshwater ichthyofauna, however, works for inventorying the fish fauna of the Northeast region are little known, compared to the Southeast and South regions of the country. Such lack can be justified by knowledge fish fauna of rivers and lakes in the Caatinga Biome, are still considered scarce and unsatisfactory. Considering the need to know the biodiversity of species of fish, the aim of the present study was to describe the structure and composition. population, as well as identifying and analyzing the diet of the traitor Hoplias malabaricus (Bioch, 1794) along a biannual hydrological cycle of the Boqueirão do Cais Dam, Cuité - PB. The collection was carried out monthly for a period of six months. THE Sampling took place between October 2011 and March 2012. For the capture of specimens, waiting nets, cast nets and puçás were used. The specimens collected were packed in coolers with ice and were taken to the Laboratory of Fish and Aquaculture Studies (LAPEAq) by CES/UFCG. The species collected were identified, weighed, measured, photographed and fixed in a 10% formalin solution. This research demonstrated that the ichthyofauna is composed of a diversity of seven species, seven genera, five families and two orders: Leporinus piau (Fowler, 1941), Hoplias malabaricus (Bioch, 1794), Astyanax bimaculatus (Linnaeus, 1758), Steindachnerina notonota (Miranda-Ribeiro, 1937), Crenicichla sp. (Pioeg, 1991), Geophagus brasiliensis (Quoy and Gaimard, 1824) and Oreochromis niloticus (Linnaeus, 1758). The traitor Hoplias malabaricus (Bioch, 1794) presents trophic flexibility, with predominance by a piscivorous diet.